The cost of the left’s Green New Deal is so enormous most Americans were probably never able to appreciate its true magnitude. Now, thanks to the COVID-19 crisis, maybe they can.

Last year, a study co-authored by a former head of the nonpartisan Congressional Budget Office found the GND’s 10-year sticker price could top $93 trillion — a figure that sounds like Monopoly money.

But with America on lockdown and the economy shrinking (first quarter GDP fell nearly 5 percent and might plunge as much as 40 percent in the second), Congress has been swooping in with multitrillion-dollar rescues: $2.2 trillion in March and maybe another $1 trillion in the coming weeks.

Yet to pay for the Green New Deal, which presumed Democratic nominee Joe Biden calls a “crucial framework” for fighting climate change, Washington would have to triple those outlays — every year for a decade. (And the fiscal bloodletting wouldn’t end there.)

And the tens of millions out of work thanks to the lockdown would be a pittance compared to those unemployed under the AOC plan, which offers “economic security for all who are unable or unwilling to work,” a fact sheet unveiled with it said.

The loss of freedoms under the GND would also surpass those lost under social distancing, as bureaucrats dictated how you lived, ate, traveled and worked.

Indeed, the sacrifices would have to be greater than now because even with the global economic shutdown, carbon emissions are projected to fall only 6 percent, while some analysts believe they need to drop close to 8 percent to beat climate change.

Advocates see the emissions dip as a bright side to the pandemic: “This is what ‘rapid, far-reaching and unprecedented changes in all aspects of society’ looks like,” tweeted noted climate activist Eric Holthaus. “We’re doing it. It’s possible!”

Actually, it’s hard to see any bright side to the outbreak, but it does offer a useful taste of life under the GND — not one many Americans would care for.